Stump burner



O KOHSE STUMP BURNER July 1 1924.

2 Sheets-Sheet 1 Filed April 9. 1923 0x75 fij'o/me, M

an I

Patented July 1, 1924.

UNITED STATES o'r'ro KQHSE, or CHEHALIS, WASHINGTON.

STUMP BURNER.

Application filed April 9, 1923. Serial No. 631,041.

To all whom it may concern.

Be it known that I, OTTO KoHsE, a citizen of the United States, residingat Chehalis, in the county of Lewis and State of VVashington, haveinvented certain new and useful Improvements in Stump Burners, of whichthe following is a specification.

In carrying out the present invention, it is my purpose to provideahighly improved burner, that is primarily although not spe cificallyadapted for the burning of tree stumps, the invention being socharacterized as to embrace the desired features of simplicity,durability and efficiency, the same comprising relatively few parts, andthese being correlated in such a manner as to reduce the liability ofderangement to a minimum.

A further purpose of my invention is the provision of a stump burnerthat maybe readily transported from place to place in a simple andexpeditious manner, and thereby permit the burning of stumps upon greatland acreage.

The nature and advantagesof the invention will be better understoodwhen'thefollowing detailed description is read in connection with theaccompanying drawings, the lnvention residing in the construction,

combination, and arrangement of parts as claimed.

In the drawings forming part of this application, like numerals ofreference indicate similar parts in the several views,

Figure l is a side elevation of my device, minus the burner and airnozzles.

Figure 2 is a top plan view of the oil tank, together with its directlyassociated parts.

Figure 3 is an elevation, partly in cross section of a form of burnernozzle, employed in conjunction with this invention, and

Figure 4 is a similar view of an air nozzle, also forming a part of myinvention.

Referring to the drawings in detail, 5 indicates a truck frame 6, thefront supporting and stearing wheels therefor, and 7 the rear supportingwheels. However, I do not wish to limit myself to any particular form ofsupporting truck, as in the future practice of the invention, the samewill be modified from time to time without affecting the spirit andscope of the appended claims.

Upon the rear end of the truck frame 5, is a tank 8 of relatively largecapacity, the same being secured to the frame, through the medium ofrods 9 that will extend through the body of the said tank 8. The upperend of this tank is provided with a filler opening that is normallyclosed by a cap 10, the upper end of the'tank being also equipped withan air inlet nipple 11.

Slightly forward ofthe tank 8 and Se cured upon the truck frame in anymanner desirable, is 'an' air compressor designated generally by thenumeral 12, this air compressorincluding the usual pulley wheel 13, overwhich is trained a belt 14. This belt extends forwardly of the truckframe, and

is in turn trained over a pulley 15, upon one end of thepowershaft of acombustion engine16. I

Communicating at one end with the usual outlet of the compressor 12 isan air feeder pipe 17, the same extending upwardly and thence rearwardlyandbeing connected at its opposite end to'a coupling-18 upon the saidoutlet nipple" of the tank 8, this pipe being provided witha check valve19.

Secured to the coupling 18'are oppositely extending pipes 20 and 21, thepipe 20 being equipped with a pressure gauge 22, while the pipe 21isequipped with a. safety blow off valve. Also secured to the coupling18, and extending forwardly thereof is a pipe section 24-, upon thefront end of which is a similar coupling 25, and secured thereto, andextending in opposite directions therefrom are pipe sections 26, whichare provided with pet cocks 27, the front end of said coupling'25 beingalso equipped with a similar pet cock, there being secured to each ofthese pet cocks a flexible hose 28.

Upo-n the front side of the tank '8, and adjacent the lower end thereofis an outlet pipe 29, upon the projecting end of which is a coupling 30that carries oppositely extending pipe sections 31, upon the end ofwhich are globe valves 32, to which are secured hose lengths 33, itbeing of course understood that the coupling 30 may be changed forpermitting of a greater or lesser number of valves 32 to be securedthereto.

Upon the free ends of the air hose elements 28 are nozzles M, the samebeing of a relatively elongated nature, and of any de sirableconstruction compatible with the purposes of my invention.

In Figure 3, there is shown a specific form of oil burner, thatcomprises an elongated pipe section 34, one end thereof being internallyscrew threaded for the reception of the burner tip 35, this plug beingprovided with the oil passage having its inner end shaped to provide avalve seat 36. Adjacent the end of the said pipe 34: carrying the burnertip 35 is a sleeve or collar 38 of a head re: taining metal, and beingwelded or otherwise secured to said pipe section. Upon the up per end ofthe pipe section 34 is the usual head 39, to which is attached the freeend of oneof the hose sections 33, it of course being understood thateach hose 33 carries aburner of the type shown in Figure 3. Movablewithin the pipe section 34 is a valve rod 40, one end of the same beingformed so as to engage the said valve seat 36 of the burner tip 35, forcutting off the flow of oil in the manner to be presently described.

Adjacent the upper end of the said Valve rod 40, the same is formed withan enlarged screw threaded portion 41, that has engagement within ascrew threaded opening of the said head 39, the upper end of this rodprojecting outwardly of the head and being provided with an operatingwheel 42. In employing my device'in the burning of tree stumps, it isfirst necessary that a hole be dug in the ground in a direction towardsthe heartof a stump, and preferably between the two main extendingroots. Before opening the respective valve from the oil tank 8 to theburner being used, the sleeve or collar 38 is heated to practically ared heat, after which, the valve is opened, and the valve rod -10 of theburner adjusted to the desired position. .The burner is then insertedwithin the hole, together with one of the air nozzles 33, it being ofcourse understood that the compressor 12 is being operated,

and that the respective pet cock 27 is open. The air nozzle 33 is alsoextended into the opening within said burner, and the Oll passingthrough the tube 34 will be vaporized,

whereby the same will be mixed with the air from the nozzle forproducing a highly ignitible fluid. After the stump has been burning fora certain length of time,-the oil burnei may beremoved from the hole,the air from the nozzle 33 assisting in the burning of the stump.

Although I have shown and described device as beingprimarily adapted forthe burning of tree stumps, it is nevertheless to be understood that thetank 8 may carry a supply of disinfectant material, which will bedischarged through the oil and air nozzles for spraying trees, plants orthe like, it being also obvious that the device may be used forkindredpurposes.

I do not wish to limit myself to the specific construction of the deviceas set forth, as minor changes may be made therein, without departingfrom the spirit and scopeof the invention as claimed. I

Having thus described my invention, what I claim as new, and desire to.secure by Letters-Patent, is: V

A portable stump burner including a wheeled frame, an oil tank mountedon the rear end portion of said frame, securing means extending throughsaid tank and the frame for securing said tank thereto, and an aircompressor mounted on said frame, means for driving said air compressor,a fitting mounted on the upper end of said tank and having communicationtherewith,

a pipe connecting said fittingto said air compressor for conveying theair compressed to the tank, said fitting having .a

with said outlet having a valve for control- 7 ling the outlet of fluidfrom thetank, and burner nozzles mounted on the end of said lastmentioned hose whereby the air compressed in said compressorwill beconveyed to the tank and air hose and maintained undera predeterminedpressure for forcing oil through the last mentioned'hose when the valvecontrolling communication thereto is opened and forcing air thru thefirst'meir tioned hose when the valve controlling-the outlet thereto isopen, the burner nozzles providing a fuel oil flame for burning thestump and the first mentioned hose connection providing the air for saidflame.

In testimonywhereof I affix my si nature.

I OTTO KO HSE.

